19887203

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1223}}^1$

素因数の和:1354

約数の個数: 16

約数和(自身を含む): 23970816

約数和(自身を除く): 4083613

約数列:

[1, 7, 23, 101, 161, 707, 1223, 2323, 8561, 16261, 28129, 123523, 196903, 864661, 2841029, 19887203]

約数ペア:

[(1, 19887203), (7, 2841029), (23, 864661), (101, 196903), (161, 123523), (707, 28129), (1223, 16261), (2323, 8561)]